US Bridges

Highland Avenue over Beaver Brook

Fair

Rockingham County, New Hampshire · 0.7 Mi. Nh 28 · Structure no. 006300570008900

Built
1935
90 years old, rebuilt 1970
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
762
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Highland Avenue over Beaver Brook is a prestressed concrete slab carrying Highland Avenue over Beaver Brook in Rockingham County, New Hampshire. It was built in 1935 and reconstructed in 1970, so it is 90 years old, older than the New Hampshire average of 56.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 762 vehicles a day, roughly 4% of them trucks, projected to reach 1,127 by 2043. The structure is 46 ft (14 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesHighland Avenue
CrossesBeaver Brook
Location0.7 Mi. Nh 28
CountyRockingham County
StateNew Hampshire
Coordinates42.87232, -71.32677
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28 US tons
Inventory rating17 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length46 ft (14 m)
Longest span43 ft (13.1 m)
Deck width33 ft (10.1 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic762 (2023)
Projected traffic1,127 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$314,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Highland Avenue over Beaver Brook built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1970.

What condition is Highland Avenue over Beaver Brook in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does Highland Avenue over Beaver Brook carry?

About 762 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Highland Avenue over Beaver Brook?

The structure is 46 ft (14 m) long with a longest span of 43 ft (13.1 m) and a deck 33 ft wide.

Who owns Highland Avenue over Beaver Brook?

It is owned by the City or Municipal Highway Agency.